File-cleaning machine



J. B. MU RAY.

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Filed June 12.- 1922 3 I v safgimmvron. q i v "QMQW ATTORNEY.

Patented Jan. 12, 1926 uNrrsn STATES JOHN B. MURRAY, OF LANSING, MICHIGAN.

FILE-CLEANING MACHINE.

Application filed June 12 1922. Serial No. 567,594.

T 0 all whom it may concern:

Be it known that'I, JOHN B. MURRAY, a citizen of the United States, residing at Lansing, in the county of Ingham and State of Michigan, have invented a new and useful Improvement in File-Cleaning Machines, of which the following is a specification.

' My invention relates to file cleaning machinery, and its purposes are to make a device that shall at all times, when in operation maintain a thorough mixture of the various substances composing the abrasive used, and that shall prevent clogging in the abrasive suction pipe.

I attain these purposes by the means shown in the accompanying drawings in which Figure 1 is a front elevation of my device, a part of the tank being broken away to show the interior mechanism. Fig. 2 is a side view; also a part broken away to show the interior construction. Fig. 3 is a detail sectional view of the jet nozzle.

Referring to the drawings, 1 is the main drum of my device which is composed of sheet metal of any desired character and which may be materially changed in shape, if desired, without departing from my 1nvention. prefer, however, to construct it with a conical bottom, as shown at 2, to receive the abrasive material which also may be of any abrasive character, preferablya mixture of emery, carborundum, or similar abrasive, with powdered sand and water. The bottom, 2, forms a conical chamber into which the abrasive is introduced, filling the chamber up to a height somewhat above the end of the suction pipe to be hereafter described. Compressed air is supplied to the chamber, 2, by two pipes, 3, and 4, which are connected to the main supply pipe, 5, by pipe, 18, which is supplied with air or steam from any desired source of supply. A valve, 6, is introduced in the pipe, 5, to regulate the supply of air or steam. A waste pipe, 7, is connected to the pipe, 18, to carry off any condensed steam where steam is used as the operating fluid. The pipe, 7, is also provided with a valve, 8, to be closed when desired. The pipe, 5, is also provided with a regulating valve, 9, beyond the point of junction of the supply pipes to regulate the supply of air or steam to the jet, 10. The jet, 10, is shown in detail in Fig. 3, but may be of any approved construction. It is connected to the pipe, 5, at

11, and the jet of steam or air passes out through the jet pipe, 12, creating a strong suction in the suction pipe, 13, in the manner well known in all devices of this character. The air pipes, 3, and 4, stand directly facing each other and are separated from each other, a distance depending on their size and the amount and pressure of the air. I have found in practical experience that about two inches to two and one-hall is best for ordinary purposes when the air pipes, 3, and 4, are ordinary half-inch gas pipe. The suction pipe 13, terminates substantially midway between the extremities of the pipes, 3, and 4. The extremity of the jet, 10, passes through an opening just large enough to receive it, formed in the side of the drum and is directed at an angle ap proximately forty-five degrees to the horizontal. On the opposite side of the drum is a plate, 15, adapted to receive the jet of abrasive and water from'th'e 'jet'and prevent it from wearing away the side of the drum. A bafie plate, 17, is connected to the side of the drum above the opening, 16, to prevent falling abrasive from coming out of the opening, 16. y

The operation of my device is as follows:

As already stated, the chamber, 14, is filled up with a mixture of abrasive and water so asto cover the suction pipe, 13, from two to four inches, although the exact depth is immaterial. Compressed air or steam is then turned on through the pipe, 5. The valves, 6, and 9, are opened. A jet of steam or air then issues through the pipe, 12, and, as already stated, creates a suction in the suction pipe, 13, tending to draw in a mixture of abrasive and water. This is greatly facilitated by the action of. the pipes, 3, and 4, which discharge jets of air or steam directly opposed to each other thus creating an intense boiling or eddy in the mixture of abrasive and water, preventing the abrasive from settling and keeping the mixture in condition to be mosteasily taken up by the suction.

I claim as my invention, and desire to secure by Letters Patent:

1. In cleaning apparatus of the type described, a receptacle containing a cleaning medium, agitating means for the cleaning medium embedded in the cleaning medium and adapted upon operation to hold the cleaning medium in the vicinity thereof in suspension and means extending into the receptacle and terminating at the center of the active zone of the agitating means for drawingbfl' the cleaning medium held in suspension.

2, In cleaning ap; aratus of the type de scribed, a receptacle containing a cleaning medium, agitating means Within the recep tacle, means extending into the receptacle in proximity of the agitating means for drawing-oil the cleaning medium from the receptacle for use, the agitating means including fluid conducting pipes axially alined in the receptacle with the outlet ends thereof disposed adjacent each other and with the draW-ofi' means terminating in axial alinement With the ends of the fluid conducting pipes.

8. In cleaning apparatus of the type described, a receptacle containing a cleaning medium, agitating means tor the cleaning medium embedded in the cleaning medium and adapted upon operation to hold the cleaning medium in the vicinity thereof in suspension, means extending into the receptacle in proximity of the agitating means for drawing-off the cleaning medium held in suspension, the agitating means including fluid conducting pipes axially alined in the receptacle With the outlet ends thereof disposed adjacent each other and With the draw- 0ft means terminating at the center of the active zone between the ends of the fluid conducting pipes.

In a device of the type described, a mass of loose abrasive substance, means acting upon the upper portion oi said mass for maintaining the substance in the vicinity thereof in suspension, said means comprising axially alined fluid conducting pipes having their opposed discharge ends arranged in close proximity to each other, and an abrasive draw-off pipe having its receiving end acting upon the line of impingement of the streams of fluid discharged from said conducting pipes.

53. in a device or the type described, a mass of loo e abrasive substance, means act ing upon the upper portion of said mass for maintaining the substance in the vicinity ther ot in suspension, said means comprising axially alined fluid conducting pipes having their opposed discharge ends arranged l ity to each other, an abrasive draw-oil pipe having its receiving end acting upon the line of impingement of the streams of fluid discharged from said conducting pipes, and a jet connected to the draw-oli pipe which receives its abrasive substance.

JOHN B. MURRAY. 

